inert

definition: slow and apathetic
example: By the end of the week, I wanted nothing more than to sit inert on the sofa.
speech part: adjective
synonyms: sluggish soggy torpid
definition: unable to move or resist motion
example:
speech part: adjective
synonyms:
definition: having only a limited ability to react chemically
example:
speech part: adjective
synonyms: neutral indifferent

How inert is being used?